Antiskidding device for vehicles



J. AT'HERTON. ANTISKIDDING DEVICE FOR VEHICLES. APPLICATION FILED MAY 5. I919- 1,334,644. Biz-L ATTDRNE) 'Patgnted Mal-23,1920.

NITED STATES PATENT orinoiz.

JOSEPH ATHER'I'ON, OF GARDENA,'CAL1FORNIA.

ANTISKIDDING- DEVICE FOR VEHICLES.

I To all whom it may concern:

Be it known that I, JOSEPH ATHERTON,

a citizen of the United States, residing at *Gardena, in the county of. Los Angeles and line of travel, a further 0 State of California, have invented new and useful Improvements in Antiskidding De- Y vices for Vehicles, of which the following is closely the uneven surfaceof the roadway,

another object is to so constructthe shoe that it hangs tenaciously tothe roadway.

My invention consists of the novel features herein shown, described and claimed.

Figure lis a top plan view of the frame and runnin gear of a vehicle and showing an anti-ski ding device embodying the principles of my invention in position for use,

the view being taken looking in the direction indicated by the arrow 1 in Fig. 2.

Fig. 2 is a sectional elevatidn on the line 22 of Fig. 1 and looking in the direction indicated by the arrow, and showing the anti-skidding device in operation.

. Fig.3 is a view analogous to Fig. 2 and showing the anti-skidding device out of operation.

Fig. 4 is an enlarged fra mentary sectional detail of the anti-skid ing device in planes parallel with Figs. 2 and 3. 0 j Fig. 5 is a bottom plan view of the anti-f skiddin shoe as seen looking in the direction in icated by the arrow 5 in Fig. 4.

Fig. 6 is a cross section 'onthe line 6-6 of Fig. 4 andlooking in the direction indi-u cated by the arrows.

Fig. 7 is a fragmentary view analogous to Fig. '5 and showing the anti-skidding wheel's staggered relative to each other, that is the wheels of one row are staggered relative to the wheels of an adjacent row.

Referring to the drawings in detail, bearing brackets 1 and 1' are rigidly secured to the" side bars 2 and 3 and extend downwardly near the centers of the side bars. A

look shaft'4 is mounted in the'bearings of the brackets 1 and 1', a hand lever 5 is rigidly. fixed to one end of the. rock shaft 4 outside of the side bar 2, a double actin crank wheel fi 'is'fixed upon the rock sha t Specification otLett'ers Patent. Patented. Mar. 23, 1920- 'Application filed- Hay 5,1919. Serial No. 294,948.

4 just inside of the bracket 1, a link 7 is connected to the crank pin 8 extending one way from the wheel 6, and a similar llnk 9 is connected to the crank pin 10 extending the same way from the wheel 6 and diametrically opposite the crank pin 8. 1

Toggle arms Hand 12 are rigidly secured to the side bar 2 and extend downwardly, second .toggle arms 13 and 14 are pivotally connected to the lower ends of the arms '11.

.and 12, and anti-skidding shoes 15 and 16 are pivotall connected to the lower ends of the secon toggle arms 13 and 14. Toggle links 17 and 18 are connected to the tog 1e arms 11 and 13, and the inner ends of 51s links 17 and 18 are connected together and 'connected to the link -7, so that when the rock shaft 4 is operated to rotate the wheel 6 in the direction indicated by the arrow l9'the toggle links 17 and 18 are straightened to straighten the toggle arms 11 and 13 and move the anti-skidding shoe 15 downwardly, and so that when the hand lever 5 is operated to move the rock shaft 4 in the opposite direction the toggle links 17 and 18 are bent upon the joint to swing the toggle arm 13. upwardly and raise the anti-skidding shoe 15.

' In a like manner, the toggle links 20 and 21 "are connected to the toggle arms 12 and 14 and connected together and connected to the link 9, so that when the hand lever 5 is operated the anti-skidding shoes 15v and 16 go up and down simultaneously.

In a like manner the anti-skidding shoes j 22 and 23 are connected to the side bar 3 and to the rock shaft 4v through the links 24 and 25 and the double acting crank 26 for simultaneous operation with the a skidding'shoes 15 and 16.

Referring to Fig. 4, the links. 7, 17 and 18 aremade to yield under compression so that when the anti-skidding shoe 15'is running upon uneven ground the shoe may yield to the unevenness of the ground. The link 7 consists of a rod 27, a barrel 28 connected 7 to the red by a pin 29, a web 30 extending across the center of the barrel, a rod 31 slidingly mounted through the web 30, a

head 32 upon the rod 31 to engage the web and limit the expansion of thelink, a spring 33 around the rod 31 against the opposite side of the web 30 from the head 32, and a spring seat 34 upon the rod 31'against the spring; so'that under compression; the spring 33 may give to shorten the link 7 The links 17, and 18 are constructed in the same way and the anti-skidding shoes 16, 22 and 23 are mounted to yield in the same manner as the shoe 15. e

Referring to Figs. 4, 5 and 6, the details of the anti-skiddingshoe l5 are'asfollows: The body or frame of the'shoe comprises a fiat plate 35, side walls 36 and 37 extending downwardly from the sides of the flat plate 35, end walls 38 and 39 extending downwardly from the ends of the plate 35, and runners 40 and 41 extending forwardly and backwa-rdly from the side walls 36 and '37. A bearing bracket 42 is connected to the center and top of the plate 35, and the lower end of the toggle arm 13 is connected to the bearing bracket 42 by a pin 43. Reciprocating plates 44, 45, 46 and 47 are mounted crosswise in the chamber 48 surrounded by the walls 36, 37, 38 and 39, stud bolts 49 are fixed in, the plates 44, 45, 46 and 47 and extend slidingly through the plates 35, and expansive coil springs 50 are placed upon the stud bolts 49 between the plates 44, 45, 46 and 47 and the plate 35 the tensions of the springs being exerted to hold the plates 44, 45, 46 and 47 yieldingly downwardly and so as to allow the plates to yield upwardly.

Each plate 44, 45, 46 and 47 is provided with a series of toothed wheels 51, each wheel being. independently mounted in bearings 52 extending downwardlyl from the plates. Normally the wheels 51 extend below the lower edges 53 of the side plates 36 and 37.

When the hand lever 5 is operated to lower the anti-skidding shoes 15, 16, 22 and 23, as in Fig. 2, the toothed wheels 51 will engage the surface of the ground, ice, or pavement and hold the vehicle from skidding sidewise.

The wheels 51 mounted on one shaft may be arranged in staggered relation to the wheels 51 on the shaft adjacent to the first shaft, so that greater bearing surface is provided to prevent the skidding of the automobile laterally.

Various changes may be made without departing from the spirit of my invention as claimed. 1

I claim:

1. An anti-skidding device for vehicles comprising a rock shaft mounted trans versely of the vehicle having face plates at the outer ends of the shaft, the face plates carrying two wrist pins on each disposed diametrically, brackets fixed to either side of the vehicle frame backwardly of the rock shaft and extending downwardly toward the ground, other brackets fixed to the vehicle frame forwardly of the rock shaft and extending downwardly! toward the ground, arms piv-otally connected to the lower ends of the four brackets, shoes pivotally connected to the lower end of the arms, the shoes comprising a housing carrying a set of flexibly mounted rollers, toggles connecting pivotallywith the brackets, other toggles connecting pivotally with the arms, reach rods connecting 'with the free ends of the toggles and connecting with the wrist pins on the face plates, the, toggles and the reach rods having springs so disposed within their structure as to form a flexible connection between the rock shaft and the shoe, and a lever for operating the rock shaft.

2. In an anti-skidding device for vehicles, an anti-skidding shoe comprising a casing having means for connecting pivotally with a rock arm, bearing members within the casing adapted to rotatably carry rollers and having upwardly extending stems adapted to be slidably mounted in holes in the top of the casing, springs mounted upon the stems between the top of the casing and the bearing members, and nuts upon the stems for h0lding the bearing members against the pres- .sure of the spr1ngs.

In testimony whereof I have signed my name to this specification.

JOSEPH ATHERTON. 

